Delegate to Self Concept!

Question

Hi Guys,

Spare me if you find this too basic and generic. But i hope answering would benefit lot of noobs out there like me.

Why we set Delegate to self?

Thanks,
Taimur

Answer 1

For example, a UITable has two delegates, UITableDelegate and UITableDataSource...

Let's say, you want to subclass a UITable and your newly created subclass should not only enhance the functionality of the UITable but also manage it's content. Since the contents are managed by the UITableDataSource-Delegate, your new UITable subclass would implement this protocol and you would set the delegate of the UITable to itself.

Hope, this helps!

Answer 2

You call a pizza parlor (object) and order a large pepperoni pizza (message).

The pizza parlor want to know who to call back (delegate) to say the pizza is on the way.

You give them your own number (self).